why do my saved pictures come out as text files instead of jpeg

I am trying to download pictures from my Facebook to use in Blogger for my Aspergers blog AsperJosh.e

But after downloading them all, I can only open it as a Text File instead of it coming out like the usual JPEG.nks

I have Googled for hours and tried out this link:
- http://www.maclife.com/article/howtos/how_unleash_power_textedit#slide-7

And asked about how to change them and people said to copy the Text File into Pages and then export it as a PDF and then open it in Preview and export it again as a JPEG but it only exported it as a picture of code.

I am new to Macbook Pro and have a 13" Retina display model with OS Yosemite.
I am still learning and even last night it took forever for me to understand that I can only make folders on Desktop and rename them instead of trying to in Documents.

I'd be most grateful for any support or answers to my queries and any tips as I'm a beginner and have yet to move everything from my Seagate External Harddrive from my old Dell Inspiron 1545 and migrate it over to my Pro. But I've been told I have to use this in order to make the formats compatible with my Macbook.
http://technofaq.org/posts/2015/04/enable-ntfs-write-support-on-mac-osx-yosemite -and-mavericks-without-using-a-third-par… 🙂

Thank you
Josh 🙂